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Infrared non-linear optical material Ba3AGa5Se10Cl2 and preparation method thereof

A nonlinear optical and infrared technology, applied in chemical instruments and methods, polycrystalline material growth, single crystal growth, etc., can solve the problems of difficult to obtain high quality, limited application, small birefringence, etc.

Active Publication Date: 2012-04-11
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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Problems solved by technology

However, traditional nonlinear optical crystals such as borate (β-BaB 2 o 4 (BBO), LiB 3 o 5 (LBO) and CsB 3 o 5 (CBO)), phosphate (KTiPO 4 (KTP) and KH 2 PO 4 (KDP)), etc. In the mid-infrared band, the nonlinear coefficient is small and the cut-off wavelength is short, which limits its application in the infrared region.
At present, the nonlinear optical materials in the infrared region are mainly chalcopyrite compounds such as AgGaS 2 , AgGaSe 2 , ZnGeP 2 , CdGaAs 2 etc. These compounds have large nonlinear coefficients and penetrate deep into the infrared region. They are suitable for frequency mixing and frequency doubling of infrared lasers. However, it is difficult to obtain high-quality large crystals, low laser damage threshold, and small birefringence. , poor thermal stability and other reasons, it is difficult for them to be widely used

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  • Infrared non-linear optical material Ba3AGa5Se10Cl2 and preparation method thereof
  • Infrared non-linear optical material Ba3AGa5Se10Cl2 and preparation method thereof
  • Infrared non-linear optical material Ba3AGa5Se10Cl2 and preparation method thereof

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Embodiment Construction

[0011] The reactants Ba, Ga, Se, ACl (A=Cs, Rb and K) and BaCl 2 Weigh according to 5:10:20:2:1, put it into a graphite crucible, transfer it to a large quartz tube, seal the tube with a hydrogen-oxygen flame under high vacuum, and then put it into a program-controlled tube furnace for 50 hours. Heating from room temperature to 850°C, keeping it at 850°C for 100 hours, and finally cooling to 450°C at 5°C / h, then turning off the furnace, and cooling down to room temperature to obtain the crystals introduced in the present invention. The present invention has following characteristics: 1, in the reaction process, ACl and BaCl 2 Participated in the reaction and found a way to introduce alkali metals, alkaline earth metals and halogens for solid-state reactions; 2. The preparation method is simple; 3. It is easy to prepare single crystals and polycrystals with good uniformity.

[0012] Table 1Ba 3 AGa 5 Se 10 Cl 2 (A=Cs, Rb and K) Crystallographic data

[0013]

[0014] ...

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Abstract

The invention relates to an infrared non-linear optical material Ba3AGa5Se10Cl2 and a preparation method thereof. The infrared non-linear optical material Ba3AGa5Se10Cl2 is synthesized by a high-temperature solid phase synthesis method by reacting at the temperature of 850 DEG C for 100 hours. In the invention, a novel infrared non-linear optical crystal Ba3AGa5Se10Cl2 (A=Cs, Rb and K) belongs to a tetragonal system space group; Ba3CsGa5Se10Cl2 has high non-linear performance; during primary measurement, the particle size of the material of 2.05 micrometers is between 46 and 74 micrometers, and the non-linear coefficient of the material is 13.6 times that of a commercial material AgGaS2; and the material can have potential non-linear optical application value.

Description

technical field [0001] The invention relates to a novel infrared nonlinear optical crystal material containing an open frame and a preparation method thereof, belonging to the field of inorganic nonlinear optical materials. Background technique [0002] With the improvement of people's requirements for infrared technology, the research is applied to infrared remote sensing, measurement, infrared military (laser guidance, infrared enemy hunting, laser anti-missile), infrared analysis (for spectral research and analysis, such as organic molecules, atmospheric composition analysis) Infrared nonlinear optical crystals and other aspects become urgent work. However, traditional nonlinear optical crystals such as borate (β-BaB 2 o 4 (BBO), LiB 3 o 5 (LBO) and CsB 3 o 5 (CBO)), phosphate (KTiPO 4 (KTP) and KH 2 PO 4 (KDP)), etc., in the mid-infrared band, the reasons such as small nonlinear coefficient and short cut-off wavelength limit its application in the infrared regio...

Claims

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Application Information

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IPC IPC(8): C30B29/46C30B1/10
Inventor 陈玲于鹏吴立明
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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